ultralight Carbon Bottle Cages Bidon Holder Ultra Light Fiber Road Bike MTB Bicycle Water Bottle 7 Grams Cup Cycling Accessories

The reviewer discusses an insanely light carbon bottle cage that weighs 6.8 grams, coming in at under 10 grams with titanium screws. They highlight its specific purpose for building the lightest possible road bike, praising its great build quality and grip on bottles without sacrificing usability. However, they note its fragility, having broken one when the bike was shouldered without a bottle inside. The reviewer acknowledges its high price but considers it justified for weight-conscious builders.